Change GrTextContext fallbacks to be a linked list chain.

src/gpu/GrContext.cpp

Index: src/gpu/GrContext.cpp
diff --git a/src/gpu/GrContext.cpp b/src/gpu/GrContext.cpp
index 6ece67fd10a19beb1e00fa8debfa1ad4d63878a8..11ebef4eaa620cd1a48a8b20ddf6cc0ba22b03fd 100755
--- a/src/gpu/GrContext.cpp
+++ b/src/gpu/GrContext.cpp
@@ -13,6 +13,7 @@
 #include "effects/GrSingleTextureEffect.h"
 
 #include "GrAARectRenderer.h"
+#include "GrBitmapTextContext.h"
 #include "GrBufferAllocPool.h"
 #include "GrGpu.h"
 #include "GrDistanceFieldTextContext.h"
@@ -250,13 +251,18 @@ GrTextContext* GrContext::createTextContext(GrRenderTarget* renderTarget,
                                             const SkDeviceProperties&
                                             leakyProperties,
                                             bool enableDistanceFieldFonts) {
-    if (fGpu->caps()->pathRenderingSupport()) {
-        if (renderTarget->getStencilBuffer() && renderTarget->isMultisampled()) {
-            return SkNEW_ARGS(GrStencilAndCoverTextContext, (this, leakyProperties));
-        }
+    GrTextContext* mainTextContext;
+    if (fGpu->caps()->pathRenderingSupport() && renderTarget->getStencilBuffer() && 
+                                                renderTarget->isMultisampled()) {
+        mainTextContext = SkNEW_ARGS(GrStencilAndCoverTextContext, (this, leakyProperties));
+    } else {
+        mainTextContext = SkNEW_ARGS(GrDistanceFieldTextContext, (this, leakyProperties,
+            enableDistanceFieldFonts));
     }
-    return SkNEW_ARGS(GrDistanceFieldTextContext, (this, leakyProperties,
-                                                   enableDistanceFieldFonts));
+    mainTextContext->setFallbackTextContext(
+                                        SkNEW_ARGS(GrBitmapTextContext, (this, leakyProperties)));
+
+    return mainTextContext;
 }
 
 ////////////////////////////////////////////////////////////////////////////////